After a decade of service, rescue worker Soohyuk Kim meets his demise while on duty. But just when everything seems like it's over, Soohyuk finds himself back in his rookie days! He's also got some new tricks up his sleeve, from mysterious pop-up windows to special abilities and even memories of his past life! And after a selfless act makes him a local hero, Soohyuk is determined to be better. This time, he intends to rescue everyone... especially the ones he failed to save before.